﻿// Copyright (c) 2008, Colin Burn
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 
// * Neither the name of WTCL nor the names of its contributors may be
// used to endorse or promote products derived from this software
// without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Media;

namespace WTCL.Charts.Axis.Scale
{
    public abstract class AxisScale<TChart, TAxisData, TAxisTick>
    {
        private TChart chart;
        protected TChart Chart { get { return this.chart; } }

        private Brush brush = Brushes.Black;
        internal Brush Brush
        {
            get { return this.brush; }
            set { this.brush = value; }
        }

        private bool dirty = true;

        internal void Init(TChart chart)
        {
            this.chart = chart;
        }

        private List<TAxisData> axisData = new List<TAxisData>();
        internal List<TAxisData> AxisData
        {
            get
            {
                Update();

                return this.axisData;
            }
        }

        private List<List<TAxisTick>> tickMarks = new List<List<TAxisTick>>();
        internal List<List<TAxisTick>> TickMarks
        {
            get
            {
                Update();

                return this.tickMarks;
            }
        }

        private void Update()
        {
            if (dirty)
            {
                dirty = false;

                this.axisData = UpdateAxisData();
                this.tickMarks = UpdateTickMarks();
            }
        }

        internal void InvalidateAxis()
        {
            this.dirty = true;
        }

        protected abstract List<TAxisData> UpdateAxisData();
        protected abstract List<List<TAxisTick>> UpdateTickMarks();
    }
}
